Figure 1 shows a tethered weather balloon subjected to a horizontal wind. The three main forces acting on the balloon—buoyancy, aerodynamic drag from the wind, and the tension in the mooring line—are represented in the free body diagram on the left.
Figure 2 on the right shows how the tension in the mooring line depends on the wind speed.
Describe the relationship between the tension in the mooring line and the wind speed shown by the graph in Figure 2.